package com.ruoyi.web.controller.monitor;

import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.utils.StringUtils;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * 缓存监控
 *
 * @author ruoyi
 */
@RestController
@RequestMapping("/monitor/cache")
public class CacheController {
  @Autowired private RedisTemplate<String, String> redisTemplate;

  @PreAuthorize("@ss.hasPermi('monitor:cache:list')")
  @GetMapping()
  public AjaxResult getInfo() throws Exception {
    Properties info =
        (Properties) redisTemplate.execute((RedisCallback<Object>) connection -> connection.info());
    Properties commandStats =
        (Properties)
            redisTemplate.execute(
                (RedisCallback<Object>) connection -> connection.info("commandstats"));
    Object dbSize =
        redisTemplate.execute((RedisCallback<Object>) connection -> connection.dbSize());

    Map<String, Object> result = new HashMap<>(3);
    result.put("info", info);
    result.put("dbSize", dbSize);

    List<Map<String, String>> pieList = new ArrayList<>();
    commandStats
        .stringPropertyNames()
        .forEach(
            key -> {
              Map<String, String> data = new HashMap<>(2);
              String property = commandStats.getProperty(key);
              data.put("name", StringUtils.removeStart(key, "cmdstat_"));
              data.put("value", StringUtils.substringBetween(property, "calls=", ",usec"));
              pieList.add(data);
            });
    result.put("commandStats", pieList);
    return AjaxResult.success(result);
  }
}
